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Var（AX）=AVar（X）A如何推导的？ - 知乎
https://www.zhihu.com/question/51082135 · bing
首先你心里要明白 A \in \mathbb {R}^ {m \times n}, X \in \mathbb {R}^ {n}, A X \in \mathbb {R}^ {m}。 然后对于 i, j \in \ {1, 2, \ldots, …
1 hasil · 4056 md
https://www.zhihu.com/question/51082135 · bing
首先你心里要明白 A \in \mathbb {R}^ {m \times n}, X \in \mathbb {R}^ {n}, A X \in \mathbb {R}^ {m}。 然后对于 i, j \in \ {1, 2, \ldots, …
1 hasil · 4056 md